Finding the Fourth Proportional to 10,920.84, 16,383.42 and 3,995.88

Step by Step Solution

1. Step 1: Write the proportion equation
   10,920.84 : 16,383.42 = 3,995.88 : x
2. Step 2: Convert to fraction form
   10,920.84/16,383.42 = 3,995.88/x
3. Step 3: Cross multiply
   10,920.84x = 16,383.42 × 3,995.88
4. Step 4: Simplify right side
   10,920.84x = 65,466,180.31
5. Step 5: Solve for x
   x = 65,466,180.31/10,920.84
6. Step 6: Final answer
   x = 5,994.61